Rengrui Xiang, Yi Teng Shih and Yuting Chen, the thinktank behind the displayed work Coffee Cup - Indicating temperature by Rengrui Xiang, Yi Teng Shih and Yuting Chen says, People especially office workers like to drink coffee on the way to work nowadays. If they can know what temperature they can drink, it may give people good taste and avoid scaling people’s lip. When the middle logo like a coffee cup turns green, it represents that this is the best temperature for drinking. They can enjoy good taste coffee at suitable temperature with this indicative design. .